Results 21 to 30 of about 2,690,813 (243)

Numerical Approximation of Riccati Fractional Differential Equation in the Sense of Caputo-Type Fractional Derivative

open access: yesJournal of Mathematics, 2020
The Riccati differential equation is a well-known nonlinear differential equation and has different applications in engineering and science domains, such as robust stabilization, stochastic realization theory, network synthesis, and optimal control, and ...
Xin Liu, Kamran, Yukun Yao
doaj   +1 more source

Numerical Solution of Fractional Order Integro-Differential Equations via Müntz Orthogonal Functions

open access: yesJournal of Mathematics, 2023
In this paper, we derive a spectral collocation method for solving fractional-order integro-differential equations by using a kind of Müntz orthogonal functions that are defined on 0,1 and have simple and real roots in this interval.
S. Akhlaghi   +2 more
doaj   +1 more source

High performance quadrature rules: how numerical integration affects a popular model of product differentiation [PDF]

open access: yes, 2011
Efficient, accurate, multi-dimensional, numerical integration has become an important tool for approximating the integrals which arise in modern economic models built on unobserved heterogeneity, incomplete information, and uncertainty. This paper demonstrates that polynomialbased rules out-perform number-theoretic quadrature (Monte Carlo) rules both ...
Kenneth L. Judd, Ben Skrainka
openaire   +4 more sources

On Convergence of Quadrature Methods for the Lipschitz-Continuous Functions [PDF]

open access: yes, 2000
In this article we present a new approach to quadrature methods where any quadrature formula is generated by a discontinuous function whose jumps are quadrature weights.
Fedotov, I, Dragomir, Sever S
core   +5 more sources

Discrete Mixed Petrov-Galerkin Finite Element Method for a Fourth-Order Two-Point Boundary Value Problem

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2012
A quadrature-based mixed Petrov-Galerkin finite element method is applied to a fourth-order linear ordinary differential equation. After employing a splitting technique, a cubic spline trial space and a piecewise linear test space are considered in the ...
L. Jones Tarcius Doss, A. P. Nandini
doaj   +1 more source

Size Dependent Buckling Analysis of a FG-CNTRC Microplate of Variable Thickness under Non-Uniform Biaxial Compression

open access: yesBuildings, 2022
This paper combines third-order shear deformation theory (TSDT) and modified couple stress theory (MCST) with the principle of total potential energy to analyze the size-dependent buckling behavior of a functionally graded carbon nanotube-reinforced ...
Pouyan Roodgar Saffari   +2 more
doaj   +1 more source

Frequency study of functionally graded multilayer graphene platelet-reinforced polymer cylindrical panels

open access: yesArchives of Mechanics, 2021
In this study, nonlinear fundamental natural frequencies of Functionally Graded (FG) multilayer Graphene Platelet-reinforced Polymer Composite (GPL-RPC) curved cylindrical panels are studied.
T. Farsadi, D. Asadi, H. Kurtaran
doaj   +1 more source

Numerical algorithms for multidimensional time-fractional wave equation of distributed-order with a nonlinear source term

open access: yesAdvances in Difference Equations, 2018
Fractional differential equations (FDEs) of distributed-order are important in depicting the models where the order of differentiation distributes over a certain range.
Jiahui Hu, Jungang Wang, Yufeng Nie
doaj   +1 more source

Simultaneous approximation of a function and its derivatives by Sobolev polynomials: Applications in satellite geodesy and precise orbit determination for LEO CubeSats

open access: yesGeodesy and Geodynamics, 2020
The objectives of this paper are twofold: (1) to present a new method of approximation such that the function and some of its derivatives are simultaneously approximated; and (2) to investigate the potential applications of this new method in the field ...
M. Kiani
doaj   +1 more source

Design of quadrature rules for Müntz and Müntz-logarithmic polynomials using monomial transformation [PDF]

open access: yes, 2009
A method for constructing the exact quadratures for Müntz and Müntz-logarithmic polynomials is presented. The algorithm does permit to anticipate the precision (machine precision) of the numerical integration of Müntz-logarithmic polynomials in terms of ...
Lombardi, Guido, Guido Lombardi
core   +1 more source

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